let expression : string = "5 + 3";
let result : any = eval (expression);
console.log (result);
let complexExpression : string = "(2 * 3) + Math.sqrt(16) / 2";
let complexResult : any = eval (complexExpression);
console.log (complexResult);
let stringExpression : string = "'Hello, ' + 'World!'";
let stringResult : any = eval (stringExpression);
console.log (stringResult);
let assignmentExpression : string = "let x = 10; x * 2";
let assignmentResult : any = eval (assignmentExpression);
console.log (assignmentResult);
let functionExpression : string = "(function(a, b) { return a * b; })(3, 4)";
let functionResult : any = eval (functionExpression);
console.log (functionResult);
